RE: [Patch 6/8] powerpc: implement crashkernel=auto

[Yu, Fenghua]

>--- linux-2.6.orig/arch/powerpc/include/asm/kexec.h
>+++ linux-2.6/arch/powerpc/include/asm/kexec.h
>@@ -39,6 +39,45 @@ typedef void (*crash_shutdown_t)(void);
>
> #ifdef CONFIG_KEXEC
>
>+#ifdef CONFIG_KEXEC_AUTO_RESERVE
>+
>+#ifndef KEXEC_AUTO_THRESHOLD
>+#define KEXEC_AUTO_THRESHOLD (1ULL<<31) /* 2G */
>+#endif
>+
>+#ifndef arch_default_crash_base
>+static inline
>+unsigned long long arch_default_crash_base(void)
>+{
>+	return KDUMP_KERNELBASE;
>+}
You don't want inline here either.

>+#define arch_default_crash_base arch_default_crash_base
>+#endif
>+
>+#ifndef arch_default_crash_size
>+static inline
>+unsigned long long arch_default_crash_size(unsigned long long total_size)
>+{

Ditto.

>+	if (total_size < KEXEC_AUTO_THRESHOLD)
>+		return 0;
>+	if (total_size < (1ULL<<32))
>+		return 1ULL<<27;
>+	else {
>+#ifdef CONFIG_64BIT
>+		if (total_size > (1ULL<<37)) /* 128G */
>+			return 1ULL<<32; /* 4G */
>+		return 1ULL<<ilog2(roundup(total_size/32, 1ULL<<21));
>+#else
>+		return 1ULL<<28;
>+#endif
>+	}
>+}
>+#define arch_default_crash_size arch_default_crash_size
>+#endif
>+
>+#endif
>+#include <asm-generic/kexec.h>
>+
> /*
>  * This function is responsible for capturing register states if coming
>  * via panic or invoking dump using sysrq-trigger.
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